一只凸透镜的焦距是 15cm 点燃的蜡烛放在距凸透镜35cm处在凸透镜另一侧的光屏上观察到烛焰清晰的像这个像一定是a.倒立放大的实像b Template




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tomski一只凸透镜的焦距是 15cm 点燃的蜡烛放在距凸透镜35cm处在凸透镜另一侧的光屏上观察到烛焰清晰的像这个像一定是a.倒立放大的实像b coloring